If it were just by who you spoke with regularly, our bosses and co-workers would be our closest friends. I'm just thinking about my facebook account, I looked up some high school ole chums and I didn't want to reunite because I honestly didn't feel I'd really benefit from getting back in touch with anyone.
We all must learn that people come into our lives, and people go. I've lost a lot of friends from grammar school to my adult stage, some to death, moving away, or just plain old grew apart. It's actually healthy; so we should embrace it and know that people come and people go.
Take care see you soon
Due